I knew nothing about the author of the text, and read it with interest, but the fact that he didn't mention Franklin was certainly a surprise and warning sign. To anyone who studied the issue, it's clear that Franklin should be credited at least equally with Crick&Watson.
It's quite possible not to be familiar with the issue, or only aware of it peripherally. "Crick & Watson" is the way it was taught to almost all Americans, correct or no.